package Usb_Usage;public class Student implements ageComparable{    private String name;    private int age;    private int score;    public Student(String name, int age, int score) {        this.name = name;        this.age = age;        this.score = score;    }    public Student(){}    @Override    public String toString() {        return "Student{" +                "name='" + name + '\'' +                ", age=" + age +                ", score=" + score +                '}';    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }    public int getScore() {        return score;    }    public void setScore(int score) {        this.score = score;    }    @Override    public int ageCompare(Student o) {        return this.age - o.age;    }}